Correct answer: Nh51...Qg2 2.R:g2# 1...Qf2 2.Rg3#/Rg2#/Rg1#/Rg6#/Rg7#/Rg8# 1...Qg1 2.Rg3#/Rg2#/R:g1# 1...Qg3 2.R:g3# 1.R:h4+??
